Tisdell, C. A. (1991). Economics of environmental conservation. Elsevier.
Tohutoru Kātū Chicago (17th ed.)Tisdell, Clement Allan. Economics of Environmental Conservation. Amsterdam: Elsevier, 1991.
Tohutoro MLA (9th ed.)Tisdell, Clement Allan. Economics of Environmental Conservation. Elsevier, 1991.
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